Pressure-volume curve in the critically ill

The pressure-volume curve of the respiratory system is a physiologic method used to describe the mechanical properties of the respiratory system. A renewal of interest in the pressure-volume curve has recently appeared because of experimental evidence regarding the information conveyed by the curve, a better understanding of the pathophysiologic factors influencing its interpretation, and the beneficial results of clinical trials based on the use of the pressure-volume curve for ventilatory management of acute respiratory distress syndrome. This article discusses the techniques for tracing the pressure-volume curves and reviews the studies evaluating recent advances concerning its use, interpretation, and clinical relevance in critically ill patients